LED chip, display module and display screen

A technology of LED chips and display modules, which is applied in the direction of identification devices, instruments, semiconductor devices, etc., can solve the problems of inconsistent black film thickness, ink color consistency, affecting the display effect of the display screen, increasing the complexity of the LED display module process, etc., to achieve Reduce the effect of side light

Active Publication Date: 2020-12-08
东莞市中晶半导体科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Covering the black film layer not only increases the process complexity of the LED display module, but also has the problem of ink color consistency caused by the inconsistent thickness of the black film layer
[0005] 2. Side light affects the display effect of the display

Method used

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  • LED chip, display module and display screen
  • LED chip, display module and display screen
  • LED chip, display module and display screen

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Embodiment Construction

[0055] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following description The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056] see figure 1 As shown, this embodiment provides an LED chip 10, including:

[0057] An N-type semiconductor layer 104, a second bottom electrode 110 is arranged on the N-type semiconductor layer 104, and the second bottom electrode 110 is connected to a second outer layer electrode 113;

[0058]a light-emittin...

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Abstract

The invention discloses an LED chip, a display module and a display screen, and the LED chip comprises a current local injection layer which is used for enabling the ratio of the area of an effectivelight-emitting area to the area of a light-emitting area of the LED chip to be smaller than a preset value; the effective light-emitting area is located in the center of the LED chip, and the epitaxial layer of the non-electrode area around the light-emitting area of the LED chip is shaped according to the shape of the effective light-emitting area. The current local injection layer is arranged tocontrol the ratio of the area of the effective light-emitting area to the area of the light-emitting area of the LED chip to be smaller than the preset value, so that the LED chip works in a linear area while the light-emitting brightness of the chip is ensured; moreover, the effective light-emitting area is located in the center of the LED chip, and the epitaxial layer of the non-electrode areaaround the light-emitting area of the LED chip is shaped according to the shape of the effective light-emitting area, so that the effective light-emitting area is far away from the edge of the substrate as much as possible, the lateral light emission of the LED chip is reduced, and the application design and process complexity of the rear-end LED display module and display screen are simplified.

Description

technical field [0001] The invention belongs to the technical field of LEDs, and in particular relates to an LED chip, a display module and a display screen. Background technique [0002] In the application of LED chips, the application of ordinary LED chips is mainly in lighting and display backlight modules, while the current rapid development of Mini LED chips is mainly used in indoor and outdoor display screens. [0003] In the current LED chip, most of its design is based on lighting applications, such as the use of patterned substrates, distributed Bragg reflection layers, etc., and the currently used Mini LED chips also use similar designs. This type of chip does not have any problems in the field of lighting or backlighting, but in the field of display, there are major defects: [0004] 1. Excessive brightness affects the comfort of the display screen. In order to make the luminance of the LED chip more suitable, the existing solution is to drive the LED chip with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/14H01L33/48H01L33/62H01L25/075H01L27/15G09F9/302G09F9/33
CPCH01L33/14H01L33/48H01L33/62H01L25/0753H01L27/156G09F9/33G09F9/3026
Inventor 胡现芝刘权锋王印卢敬权
Owner 东莞市中晶半导体科技有限公司
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